WARM UP 12/13 Write all the parts you see on here

EXTRA CREDIT! On a SEPARATE sheet of paper, you and a partner decide what disease or disorder is being descried and write it down. The top 3 groups with the most correct will get ec slips

DERMATOLOGY The study of the skin and its parts

ATHLETE’S FOOT An itchy, red, peeling condition of the skin between the toes. Cause: fungus infection (usually from public bathrooms and showers)

BOILS Infected hair follicles; large and pus-filled. CAUSE: bacteria

SHINGLES Viral infection of the nerve endings in the skin. Severe itching and painful

COLD SORES Small fluid-filled blisters that itch and sting CAUSE: herpes simplex virus Usually occur around mouth and lips Virus dormant in nerve – stimulated by stress, fever, or sunlight

CONTACT DERMATITIS Itching, redness, swelling of skin, may blister. CAUSE: chemicals or plants (poison ivy)

IMPETIGO Pink, water-filled, raised lesions that develop a crust and rupture. Usually around the mouth and nose CAUSE: staph infection (highly contagious) Common in young children

PSORIASIS Dry, silvery scales on the skin. Skin can flake off in large amounts. (Noncontiguous) In normal growth pattern, the skin cells are created in the basal layer and then move up to the outer layer of the skin. The dead cells are shed from the skin at the same rate as new cells are produced maintainin g a balance. The normal course of this phenomenon is about 28 days from cell birth to death.

In psoriasis, the affected areas switch from normal growth pattern. More cells are created and pushed to the su rface very fast. The skin cannot shed as fast as growth occurs. The excessive skin cells builds up and form elevated scaly lesions. The white scales that us ually cover the lesion is a component of dead skin cells. The redness is caused by the increase d blood supply to the affected area.

RINGWORM Scale, reddish, ring-shaped patches on the skin CAUSE: fungus

ECZEMA Red, scaly, itching patches of skin. Common in young children. (noncontagious)

BED SORES Sores causes by decrease in blood supply and constant pressure on the skin (decubitus ulcer)

ACNE Inflammation of the sebaceous glands. CAUSE: bacteria, oil, dead cells blocking pores

WARTS bumps on the surface of the skin that are rough and hard. CAUSE: viral infection of the epidermis

BLACKHEADS AND WHITEHEADS Keratin plugs the hair follicles and blocks sebum. Turn black when exposed to air.

FOLLICULITUS Infection of the scalp, pus umps and redness around the hair. CAUSE: bacteria (common with use of hair pomades)

RAZOR BUMPS Bumps usually seen around the male faces. Due to curly hairs coming out, then growing back into the skin.

EPIDERMOLYSIS BULLOSA Heredity disorder Layers of the skin can easily be pulled apart. A simple touch can separate the layers and cause blisters or rip.

HERPES SIMPLEX Cold sore – viral infection of the skin that may reoccur. This is because the virus hides in nerves. Group of small red bumps that blister, itch or burn. Dry up in a few days and form yellow crust. Lasts days. Causes: skin contact (kissing, sharing drinks, towels, etc.) fever, stress

ROSACEA Common face rash of adults. Redness of face, some swelling, pimples. May last for years. CAUSE: unknown, may be sunlight

XEROSIS Dry skin – can see it because the dead squamous cells are flaking off in excess amounts CAUSE: long hot baths, showers – remove body oils Some soaps Cold air TREATMENT: Blot skin after showers, then apply moisterizer Alpha hydroxyacid lotions best Best soaps: Dove, Oil of Olay, Cetaphil

PRURITUS Itching of skin

MANY STORIES THAT STARTED IN THE MIDDLE AGES COME FROM THE FACT THAT DISEASES WERE NOT UNDERSTOOD…for example vampires and werewolves.

PORPHYRIA When skin exposed to sunlight lesions and scars develop, gums degenerate. Due to lack of iron part of hemoglobin. These people avoided the light (middle ages – vampires). To help, can inject heme from healthy patients (before could do this, drink heme from blood) Garlic – severely aggravates the porphyria symptoms ALSO some have excess hair growth on the face and hands – wolflike look